Home / 13,712.06-18,918.61-9,240.86

Finding the Fourth Proportional to 13,712.06, 18,918.61 and 9,240.86

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Solution

The fourth proportional to 13,712.06, 18,918.61 and 9,240.86 is: 12,749.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.06 : 18,918.61 = 9,240.86 : x
  2. Step 2: Convert to fraction form
    13,712.06/18,918.61 = 9,240.86/x
  3. Step 3: Cross multiply
    13,712.06x = 18,918.61 × 9,240.86
  4. Step 4: Simplify right side
    13,712.06x = 174,824,226.40
  5. Step 5: Solve for x
    x = 174,824,226.40/13,712.06
  6. Step 6: Final answer
    x = 12,749.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.